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#1 |
Registered User
Join Date: Oct 2010
Location: Tujunga, CA
Posts: 262
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Wiper motor only works when you push it.
Hi guys,
On my '72 C-20 the wiper motor used to work when I would twist the knob, the intermittent function. But now it will only work if I push down on the knob, it makes a clicking sound and the wipers move once, not continuously. Do I need a new motor? What steps do I need to trouble shoot? ![]()
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Thanks, Emil 1972 Chevy C20 |
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#2 |
Rusty Nuts
Join Date: Sep 2008
Location: Clever Missouri
Posts: 1,338
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Re: Wiper motor only works when you push it.
Well when you push the button in, that turns your washer pump on and that is your clicking noise, I would replace the switch and see if that corrects your problem. The wipers come on when you push the button in so i would not think the motors bad.
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(Clever Missouri) Southwest Larry Mr Chevrolet My Build, The Marathon Truck http://67-72chevytrucks.com/vboard/s...d.php?t=604414 |
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#3 |
Registered User
Join Date: Oct 2010
Location: Tujunga, CA
Posts: 262
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Re: Wiper motor only works when you push it.
How do I replace the switch? Any tips/tricks?
__________________
Thanks, Emil 1972 Chevy C20 |
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#4 |
Registered User
Join Date: Aug 2007
Location: Boise, Idaho
Posts: 676
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Re: Wiper motor only works when you push it.
Mine does the same thing, I'm sure it's the switch and have one to replace although the click sound, does that mean the pump part is working?
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1968 4x4 Frame, with a 67 Cab and Bed A Shorter Step 1999 Dodge 2500 Cummins Diesel |
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#5 |
Rusty Nuts
Join Date: Sep 2008
Location: Clever Missouri
Posts: 1,338
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Re: Wiper motor only works when you push it.
A little standard screw driver to take off the knob then take off the nut that holds the switch in and then remove it out the back.
__________________
(Clever Missouri) Southwest Larry Mr Chevrolet My Build, The Marathon Truck http://67-72chevytrucks.com/vboard/s...d.php?t=604414 |
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#6 |
Rusty Nuts
Join Date: Sep 2008
Location: Clever Missouri
Posts: 1,338
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Re: Wiper motor only works when you push it.
That means the pump is on but might not be good enough to pump because the diaphram is bad.
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(Clever Missouri) Southwest Larry Mr Chevrolet My Build, The Marathon Truck http://67-72chevytrucks.com/vboard/s...d.php?t=604414 |
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#7 |
The Older Generation
![]() ![]() ![]() Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,505
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Re: Wiper motor only works when you push it.
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This thread explains how to test your wiper motor if you need to. http://67-72chevytrucks.com/vboard/s...d.php?t=413551 Scroll down to the "two speed" wiper section.... LockDoc
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Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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#8 |
Registered User
Join Date: Aug 2007
Location: Boise, Idaho
Posts: 676
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Re: Wiper motor only works when you push it.
Thanks for the link on testing wiper!
__________________
1968 4x4 Frame, with a 67 Cab and Bed A Shorter Step 1999 Dodge 2500 Cummins Diesel |
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#9 |
Registered User
Join Date: Apr 2014
Location: NOR-CAL
Posts: 1,134
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Re: Wiper motor only works when you push it.
Weird noticed on mine tonight.
Twist switch to on and nothing. Push the button and they come on and will run continuous at either speed I guess it works but weird |
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